<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../../react18/react.development.js"></script>
  <script src="../../react18/react-dom.development.js"></script>
  <script src="../../react18/babel.min.js"></script>
</head>

<body>
  <div id="app"></div>
  <script type="text/babel">
    class App extends React.Component{
      state = {
        name : "老六",
        age : 19,
        hobby : "喝酒"
      }
      render(){
        const {name,age,hobby} = this.state
        return (
          <div>
            <input type="text" value = {name} onChange = {this.change("name")}/>
            <br/>
            <input type="text" value = {age} onChange = {this.change("age")}/>
            <br/>
            <input type="text" value = {hobby} onChange = {this.change("hobby")}/>
            <br/>
            <button onClick = {this.handle}>点击获取数据</button>
          </div>
        )
      }

      // changeName = (e) => {
      //   const {value} = e.target
      //   this.setState({name:value})
      // }

      // changeAge = (e) => {
      //   const {value} = e.target
      //   this.setState({age:value})
      // }

      // changeHobby = (e) => {
      //   const {value} = e.target
      //   this.setState({hobby:value})
      // }

      // 优化
      change =(type)=>{
        return (e)=>{
          const {value} = e.target
          this.setState({[type]:value})
        }
      }


      handle=()=>{
        const {name,age,hobby} = this.state
        console.log(name,age,hobby);
      }
    }
    const root = ReactDOM.createRoot(document.getElementById("app"))
    root.render(<App/>)
  </script>
</body>

</html>